All-Wheel Drive
When to Check Lubricant
It is not necessary to regularly check fluid unless you suspect there is a leak or you hear an unusual noise. A fluid loss could indicate a problem. Have it inspected and repaired.
How to Check Lubricant

To get an accurate reading, the vehicle should be on a level surface.
If the level is below the bottom of the filler plug hole, located on the transfer case, you’ll need to add some lubricant. Add enough lubricant to raise the level to the bottom of the filler plug hole.
Use care not to overtighten the plug.
What to Use
To determine what kind of lubricant to use.
See also:
Cruise Control Messages
CRUISE SET TO XXX
This message displays when the
cruise control is set and shows the
speed it was set to. See Cruise
Control for more
information. ...
Navigation
OnStar navigation requires the Directions and Connections service plan.
Push to receive directions or have
them sent to the vehicle navigation screen. Destinations can also be forwarded to
the v ...
Online Owner Center
Manage your vehicle (U.S.) at
buick.com. Click on "Owners,"
then "Manage My Buick/Owners Login."
Information and services
customized for your specific
vehicle — all in o ...
